curl --request POST \
  --url https://api.yalg.ai/v1/users/themes \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "name": "Founder voice"
}
'

const options = {
  method: 'POST',
  headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({name: 'Founder voice'})
};

fetch('https://api.yalg.ai/v1/users/themes', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.yalg.ai/v1/users/themes"

payload = { "name": "Founder voice" }
headers = {
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

{
  "id": "018f9f46-9a0e-7afd-b13f-2f63f07aa4f2",
  "name": "Founder voice",
  "description": "Direct, practical, and story-led.",
  "isDefault": false,
  "config": {
    "tone": "direct",
    "pacing": "concise"
  },
  "createdAt": "2026-06-20T17:24:39.000Z",
  "updatedAt": "2026-06-20T17:24:39.000Z"
}

{
  "statusCode": 400,
  "message": "Validation failed",
  "error": "Bad Request",
  "code": "validation_failed"
}

{
  "statusCode": 401,
  "message": "Invalid or missing API key",
  "error": "Unauthorized",
  "code": "unauthorized"
}

{
  "statusCode": 403,
  "message": "Access denied",
  "error": "Forbidden",
  "code": "forbidden"
}

{
  "statusCode": 409,
  "message": "Resource conflict",
  "error": "Conflict",
  "code": "conflict"
}

{
  "statusCode": 429,
  "message": "Rate limit exceeded",
  "error": "Too Many Requests",
  "code": "rate_limit_exceeded",
  "retryAfter": 60
}

{
  "statusCode": 500,
  "message": "Internal server error",
  "error": "Internal Server Error",
  "code": "internal_server_error"
}